Most religious people think their morality comes from their religion. And deeply religious people often wonder how atheists can have any morality at all.

I’m going to use Christianity as my example, not because it’s representative of religion in general, but because there’s a lot of research on Christians, and because many readers will likely be familiar with it.

Christians will often tell you that their morality comes from their religion (or from their parents’ version of it). And if you ask them about what their religion tells them about what’s right and wrong, it will likely line up with their own ideas of right and wrong.

But the causal link is not as clear as it first appears.

The Bible is complex, with many beliefs, pieces of advice and moral implications. Nobody can believe in all of it. Different branches of Christianity, and indeed every different person, take some things from it and leave others.

Many things in the Bible are unacceptable to modern Christians. Why? Because they do not sit right with contemporary moral sensibilities.

Basically, people take or leave religious morality according to some internal moral compass they already have. They might even choose which church to go to, according to how well the teachings of that church match up with what they feel is right or wrong.

In the modern Western world, some people feel free to choose the religion that feels right to them. Why might someone convert to Christianity from Buddhism, or become a Muslim? Often it’s because the new religion speaks to them in a way that the old one didn’t.

We see that people can choose religious beliefs, churches and even whole religions based on the morality that they already have. And this is the morality that atheists have too.

Right and wrong

Experimental evidence suggests that people’s opinion of what God thinks is right and wrong tracks what they believe is right and wrong, not the other way around.

Then Epley and his fellow researchers attempted to manipulate their participants’ moral beliefs with persuasive essays. If convinced, their moral opinion should then be different from God’s, right?

Wrong. When respondents were asked again what God thought, people reported that God agreed with their new opinion!

Therefore, people didn’t come to believe that God is wrong, they just updated their opinion on what God thinks.

When you change someone’s moral beliefs, you also change their opinion on what God thinks. Yet most surveyed still clung to the illusion that they got their moral compass from what they think God believes is right and wrong.

Who defines our morals?

If people are getting their morals from their conception of God, you’d think that contemplating God’s opinion might be more like thinking about someone else’s beliefs than thinking about your own.

But this isn’t the case. The same study also found that when you think about God’s beliefs, the part of your brain active when thinking about your own beliefs is more active than the part of your brain that is active when thinking about other people’s beliefs.

Image: NCBI

In other words, when thinking about God’s beliefs, you’re (subconsciously) accessing your own beliefs.

This equation happens even for atheists, who often take up the mores of their culture, which happens to have been influenced heavily by religions they don’t even ascribe to. So it’s not that religion does not effect morality, it’s just that morality also impacts religion.